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GlobalBuildInfo plugin should search packed references for commit IDs (#47464) (#47936) 

* GlobalBuildInfo plugin searches packed references

In recent versions of Git, references may be packed in a packed-refs
file. If this happens, Gradle will need to look in that file to find
build information.
This commit is contained in:
William Brafford 2019-10-11 14:47:34 -04:00 committed by GitHub
parent 256102042b
commit fe8767789a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 27 additions and 4 deletions
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31
buildSrc/src/main/java/org/elasticsearch/gradle/info/GlobalBuildInfoPlugin.java
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@ -28,7 +28,10 @@ import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Random;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class GlobalBuildInfoPlugin implements Plugin<Project> {
private static final String GLOBAL_INFO_EXTENSION_NAME = "globalInfo";
@ -261,7 +264,23 @@ public class GlobalBuildInfoPlugin implements Plugin<Project> {
}
final String ref = readFirstLine(head);
if (ref.startsWith("ref:")) {
revision = readFirstLine(gitDir.resolve(ref.substring("ref:".length()).trim()));
String refName = ref.substring("ref:".length()).trim();
Path refFile = gitDir.resolve(refName);
if (Files.exists(refFile)) {
revision = readFirstLine(refFile);
} else if (Files.exists(dotGit.resolve("packed-refs"))) {
// Check packed references for commit ID
Pattern p = Pattern.compile("^([a-f0-9]{40}) " + refName + "$");
try (Stream<String> lines = Files.lines(dotGit.resolve("packed-refs"))) {
revision = lines.map(p::matcher)
.filter(Matcher::matches)
.map(m -> m.group(1))
.findFirst()
.orElseThrow(() -> new IOException("Packed reference not found for refName " + refName));
}
} else {
throw new GradleException("Can't find revision for refName " + refName);
}
} else {
// we are in detached HEAD state
revision = ref;
@ -274,8 +293,12 @@ public class GlobalBuildInfoPlugin implements Plugin<Project> {
}
private static String readFirstLine(final Path path) throws IOException {
return Files.lines(path, StandardCharsets.UTF_8)
.findFirst()
.orElseThrow(() -> new IOException("file [" + path + "] is empty"));
String firstLine;
try (Stream<String> lines = Files.lines(path, StandardCharsets.UTF_8)) {
firstLine = lines
.findFirst()
.orElseThrow(() -> new IOException("file [" + path + "] is empty"));
}
return firstLine;
}
}